PASSERES OSCINES TURDID^E. do 



vary somewhat according to the speedy or tardy advance of the seasons. 

 They may not in every instance be quite correct, for not to find a bird 

 is at best but negative evidence of its absence. If, then, we say, for 

 example, "arrives the middle of April and remains until the middle of 

 September," we are to be understood to state that according to our 

 observations the species in question is not ordinarily to be found before 

 the first nor after the last of these dates. It is regretted that the ac- 

 counts of some of the water-birds, notably the Anatidcc, are still incom- 

 plete with reference to the times of arrival and departure ; but it is 

 hoped that the very full particulars given of most of the land birds will 

 in a measure condone this defect. 



In the present edition the species are numbered 1 to 248 consecutively. 

 With this numeration is retained in parenthesis that of the old List, for 

 facility of cross-reference. The arrangement and nomenclature are 

 altered entirely, being conformed to those of "the Coues Check List of 

 North American Birds," etc.* The number which each species bears iu 

 that List is also affixed in brackets. 



Order PASSERES : Passerine Birds. 



Suborder OSCINES : Singing Birds. 

 Family TUKDID^ : Thrushes. 

 Subfamily TURDUSLL : Typical Thrushes. 

 1. (4S.J Turdus migratorius Linn. Romx. 



A permanent resident, though probably not represented by the same 

 individuals all the year round. A few breed, and a few remain during 

 the winter ; but the greater number pass through during the migra- 

 tions, proceeding farther north for the summer, and farther south for 

 the winter. It is most abundant during the months of March and 



Fig. 1. — Head of Robin, nat. size. 



* The Coues Check List of North Americau Birds. Second Edition, Revised to Date, 

 and entirely Rewritten, under Direction of the Author, with a Dictionary of the 

 Etymology, Orthography, and Orthoepy of the Scientific Names, the Concordance of 

 previous Lists, and a Catalogue of his Ornithological Publications. Boston. Estes 

 and Lauriat. 1882. 1 vol., imp. 8vo, pp. 1G5. 



Bull. Nat, Mus. No. 26 3 



